Try
http://www.goneboarding.co.uk/
Yes, that's forum is ok, although it's a bit UK/ flatland oriented and
fairly young. You do get people there who think the crud at the side
of Xscape is "powder". There are several other uk forums you'll get
with a google or two... looks to me like most people have moved away
from usenet, or perhaps never moved to it.
I like
http://www.bomberonline.com, but that's because I've heard all
the kid jokes before and I like riding fast...